fix of the description on AttackerKB

Author: jrecinsky-r7

README.md

@@ -109,7 +109,7 @@ For further Information see the [license file](https://misp.github.io/misp-modul
 * [Qintel QSentry Lookup](https://misp.github.io/misp-modules/expansion/#qintel-qsentry-lookup) - A hover and expansion module which queries Qintel QSentry for ip reputation data
 * [QR Code Decode](https://misp.github.io/misp-modules/expansion/#qr-code-decode) - Module to decode QR codes.
 * [RandomcoinDB Lookup](https://misp.github.io/misp-modules/expansion/#randomcoindb-lookup) - Module to access the ransomcoinDB (see https://ransomcoindb.concinnity-risks.com)
-* [Rapid7 AttackerKB](https://misp.github.io/misp-modules/expansion/#/documentation#rapid7-attackerkb-lookup) - Module to query Rapid7 AttackerKB - https://attackerkb.com/ 
+* [Rapid7 AttackerKB](https://misp.github.io/misp-modules/expansion/#/documentation#rapid7-attackerkb-lookup) - Module to query Rapid7 AttackerKB vulnerability intelligence - https://attackerkb.com/
 * [Real-time Blackhost Lists Lookup](https://misp.github.io/misp-modules/expansion/#real-time-blackhost-lists-lookup) - Module to check an IPv4 address against known RBLs.
 * [Recorded Future Enrich](https://misp.github.io/misp-modules/expansion/#recorded-future-enrich) - Module to enrich attributes with threat intelligence from Recorded Future.
 * [Reverse DNS](https://misp.github.io/misp-modules/expansion/#reverse-dns) - Simple Reverse DNS expansion service to resolve reverse DNS from MISP attributes.